I'm talking about the validity of your argument about the impossibility of God to create Jesus without a human father.
The prophecies that Christians rely on to prove Jesus' lineage depends on it.
A new Adam wouldn't have any human parents.
So, you didn't bother answering what is the difference between the sign of a pregnant virgin compared to a pregnant non-virgin. The sign should be visible to all.
The only place that I recall that the sign of a virgin is discussed is in Deut 22.
17And now he has accused her of shameful conduct, saying, ‘I discovered that your daughter was not a virgin.’ But here is the proof of her virginity.” And they shall spread out the cloth before the city elders.
I don't think Mary provided this sign.